Beat the butter and sugar together until light and fluffy.
Add in the yoghurt, one tablespoons at a time.
Add in the flour and egg (one at a time) and fold it until smooth.
Add in the vanilla essence and fold it until the mixture is consistent.
Split the batter into two and stir in the cocoa powder into one of the bowls.
Take 2 spoons and use them to dollop the chocolate and vanilla cake mixes into the tin alternately. Take a skewer and swirl it around the mixture in the tin a few times to create a marbled effect. Bake the cake for 55-60mins until a skewer inserted into the centre comes out clean.
There you have it! Guilt-free chocolate marble cake!
I love cakes that are simple yet wholesome. Marble cakes tend to be very buttery and fattening. They do taste good but I feel guilty after eating them especially since I can never stop at one slice. 154 more words